Why Use Gtechniq C5 Wheel Armour? C5 Wheel Armour offers the best protection for wheels, repelling brake dust and contaminants and making them easier to maintain. Because of C5’s unique, exceptionally fine surface rheology and chemical bonding mechanism, its performance is outstanding. The former property gives the coating its excellent stain and contaminant resistance, and the chemical bond formed between the wheel surface and C5 makes the coating durable. C5 will retain its integrity up to temperatures of 600oC (1112oF) making it suitable for all parts of your vehicle’s rims and brake callipers. 15ml of C5 will cover the rim faces only of up to 17 inch wheels. 30ml of C5 will cover the inside and out of any wheels up to 20 inch. -Up to 2 years of durability -Makes rims easy to maintain -Suitable for wheels, brake calipers and exhaust tips